An intelligent control system for wood-burning pellet stove

Abstract

The invention provides an intelligent control system for a fire brand particle furnace. The intelligent control system is composed of a charging control module (100), an ignition control module (200), an automatic ash removing module (300), a temperature control module (400), a center control module (500), an alarm module (600), a raw material analysis module (700) and a database module (800). According to the provided intelligent control system for the fire brand particle furnace, automatic charging and automatic ignition can be achieved according to the situation of fire brand particle raw materials in a combustion chamber, the wind speed can be adjusted according to the room temperature situation, automatic temperature control is achieved according to the combustion situation of raw materials in a combustion box, and automatic ash removal can be achieved in the raw material combustion process. The combustion state can be adjusted according to the fuel combustion situation. Automatic alarming can be achieved under the situation of fire brand particle furnace abnormality. Automatic updating can be conducted through data accumulation in the running process, intelligent growth of the whole system is achieved, and intelligent control over the fire brand particle furnace is achieved.

Description

technical field [0001] The invention relates to the field of biomass furnaces, in particular to an intelligent control system for wood-burning pellet furnaces. Background technique [0002] Biomass stove refers to the indoor heating equipment that is independent or built on the wall, uses combustibles as energy, and has a chimney inside. According to the different burning materials, it can be divided into the following four types: 1) coal-burning type; 2) wood-burning type; 3) wood-burning pellet type; 4) alcohol-burning type. [0003] The wood-burning pellet stove mainly uses the combustion of wood, straw, corn stalks, garbage and other particles to generate heat and achieve heating effects. It is suitable for families in areas without gas supply. [0004] There are many problems in the use of wood-burning pellet stoves, the most prominent ones are: [0005] 1) Due to the different sources and different storage and transportation conditions of the pellet fuel used for com...

AI Technical Summary

Problems solved by technology

[0005] 1) Due to the different sources and different storage and transportation conditions of the pellet fuel used for combustion, the calorific value of different fuels is different, and the combustion efficiency affected by the fireplace air flow and oxygen content is also different, so the fireplace cannot fully adapt to the fuel and Control the environment, the combustion temperature of the fireplace fluctuates greatly, and the fuel burnout rate is low, resulting in fuel waste

[0006] 2) When the pellet fuel is burned, due to the covering of ashes on the surface of the fuel, the full contact between the fuel and the oxygen in the air is affected, and the fuel cannot be burned well, resulting in fuel waste

[0007] 3) If the original components such as ignition rods and sensors fail, they will be completely unusable or out of control, resulting in continuous heating and even fire risks

[0008] 4) Existing wood-burning pellet stoves have hot air motors and feeding motors, but no suction motors, so that oxygen-containing air cannot be replenished into the furnace in time, resulting in insufficient fuel combustion, slow combustion, and even harmful gases such as carbon monoxide.

[0009] 5) Due to the common use of DC motors, the structure is complex and the manufacturing cost is high; the maintenance is troublesome and the repair cost is high; the speed change rate is high when the motor speed is adjusted, resulting in unstable airflow and uneven temperature of the hot air sent out

The torque is insufficient when starting, the starting is not smooth, and the motor is easily damaged

[0010] 6) The current control system of combustion and feeding is only based on the difference between the indoor temperature and the set temperature. If the fuel lacks oxygen and is not fully combusted, or the temperature in the furnace is high but the hot air is not sent out of the furnace in time, it will only lead to fuel waste and later stages. The high temperature overshoot of the air outlet is too large, and the user is extremely uncomfortable

[0011] 7) The voltage of each discharge of the ignition rod electronic igniter is as high as 15,000 volts, which has high requirements for the coil that generates high voltage. Under such a high voltage, the coil is easy to cause internal high voltage breakdown, and the life of the general electronic igniter Normal use is close to tens of millions of times, and the service life is relatively low under continuous and frequent work

[0012] 8) The current control system mostly adopts the photoelectric principle to judge the remaining material, which is prone to failure and misjudgment in the smoke and dust environment of furnace combustion. When the fuel is not evenly distributed near the side of the fuel hopper and does not block the photoelectric element, it will also cause errors in the judgment of the remaining material

[0013] 9) There is no cumulative material statistics function, and users cannot estimate and evaluate the long-term use of fuel

[0014] 10) If the furnace door is not closed or opened by minors unintentionally, there is a potential risk of fire or scald

Images